CLN: remove redundant mac wheel-build code

[robbuckley]

• closes #xxxx
• tests added / passed
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• whatsnew entry

this code is redundant for wheels built using https://github.com/MacPython/pandas-wheels, as the line https://github.com/matthew-brett/multibuild/blob/266d88fe1e474748cc8a3823dc3934bf55e76383/osx_utils.sh#L306 adds tags for 10.9 and 10.10.

Note: circleci fails as I forgot to turn it off on my fork, after it was turned off upstream

[jreback]

great!

[jreback]

were you able to build the wheels on a fork to test?

[robbuckley]

yes, although its getting difficult as the mac builds on the wheel builder are starting to hit the travis job timeout (50min)

[jreback]

great @robbuckley yeah I think the timeouts are separate (I pushed a fix to see)

[codecov]

Codecov Report

Merging #24644 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #24644   +/-   ##
=======================================
  Coverage   92.37%   92.37%           
=======================================
  Files         166      166           
  Lines       52379    52379           
=======================================
  Hits        48386    48386           
  Misses       3993     3993

Flag	Coverage Δ
#multiple	90.8% <ø> (ø)	⬆️
#single	43.01% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d106e99...b390c4c. Read the comment docs.

[codecov]

Codecov Report

Merging #24644 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #24644   +/-   ##
=======================================
  Coverage   92.37%   92.37%           
=======================================
  Files         166      166           
  Lines       52379    52379           
=======================================
  Hits        48386    48386           
  Misses       3993     3993

Flag	Coverage Δ
#multiple	90.8% <ø> (ø)	⬆️
#single	43.01% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d106e99...b390c4c. Read the comment docs.

[jreback]

thanks @robbuckley

[jreback]

btw I put in place pytest-xdist on the wheels, so finish in about 40 min now :>